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    Re: Sextant accuracy (was : Plumb-line horizon vs. geocentric horizon)
    From: Frank Reed CT
    Date: 2005 Feb 23, 17:13 EST
    Ken earlier wrote:
    "When the
    observer is allowed to pan back and forth (using the image slices as a
    video stream) then the apparent resolution of the images increases by
    about an order of magnitude."
     
    I wonder if this is the same phenomenon:
    When an image of the Sun is projected onto a smooth white screen, such as a sheet of paper, there is a certain amount of detail visible. But when the screen itself is slowly rotated or panned through the projected image, considerably more detail becomes apparent (the faculae, in particular, show up best when the screen is moved around). Presumably, the visual system is ignoring small random defects in the screen because they are now moving around. Or maybe the visual system tracks image components which move together as a unit... I'm sure this has been tested out. Any relevance to sextant use? A benefit for shaky hands again?? <g>
     
    -FER
    42.0N 87.7W, or 41.4N 72.1W.
    www.HistoricalAtlas.com/lunars
       
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